As Greg points out, these are not official Icom modifications, and he and those who designed them cannot be responsible if any damage results. Come to think of it, I have not tried them and I cannot be responsible for any damage caused either.

Before you tinker with your rig remember that you may invalidate the warranty or do some damage. On the other hand, radio amateurs are famous for working on their own equipment.

Here are the two pages on Greg's website which deal with the modifications. Note that you should only do one, not both. The SOFT one looks best to me. See also the comments from those who have done it.